<template>
    <div class="sidebar">
        <el-menu
            class="sidebar-el-menu"
            :default-active="onRoutes"
            :collapse="collapse"
            background-color="#324157"
            text-color="#bfcbd9"
            active-text-color="#20a0ff"
            unique-opened
            router
        >
            <template v-for="item in items">
                <template v-if="item.children">
                    <el-submenu :index="item.path" :key="item.path">
                        <template slot="title">
<!--                          这个是图标 可以在路由里用mete配置-->
<!--                            <i :class="item.icon"></i>-->
                            <span slot="title">{{ item.name }}</span>
                        </template>
                        <template v-for="childrenItem in item.children">
                            <el-submenu
                                v-if="childrenItem.children"
                                :index="childrenItem.path"
                                :key="childrenItem.path" >
                                <template slot="title">{{ childrenItem.name }}</template>
                                <el-menu-item
                                    v-for="(threeItem,i) in childrenItem.children"
                                    :key="i"
                                    :index="threeItem.path"
                                >{{ threeItem.name }}</el-menu-item>
                            </el-submenu>
                            <el-menu-item
                                v-else
                                :index="childrenItem.path"
                                :key="childrenItem.path"
                            >{{ childrenItem.name }}</el-menu-item>
                        </template>
                    </el-submenu>
                </template>
                <template v-else>
                    <el-menu-item :index="item.path" :key="item.path">
                        <i :class="item.icon"></i>
                        <span slot="title">{{ item.name }}</span>
                    </el-menu-item>
                </template>
            </template>
        </el-menu>
    </div>
</template>

<script>
import bus from './bus';
import Vue from 'vue';
export default {
  name: "sidebar",

    data() {
        return {
            collapse: false,
            items: undefined
        };
    },
    computed: {
        onRoutes() {
            return this.$route.path.replace('/', '');
        }
    },
    created() {
        // 通过 Event Bus 进行组件间通信，来折叠侧边栏
        bus.$on('collapse', msg => {
            this.collapse = msg;
            bus.$emit('collapse-content', msg);
        });
        this.getUserInfo();
    },
    methods:{
      getUserInfo(){
        let userInfo = Vue.ls.get("userInfo");
        this.items = userInfo.sysPermissionVos;
      }
    }
};
</script>

<style scoped>
.sidebar {
    display: block;
    position: absolute;
    left: 0;
    top: 70px;
    bottom: 0;
    overflow-y: scroll;
}
.sidebar::-webkit-scrollbar {
    width: 0;
}
.sidebar-el-menu:not(.el-menu--collapse) {
    width: 250px;
}
.sidebar > ul {
    height: 100%;
}
</style>
